1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d89796d7908abeeced44bcaac514d9a2dcf52d099286e44035640bb9abcb75. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85858f9f-144c-4c0c-b35e-efcb47053ae0.json and https://artists.proofprofile.net/proofs/artist/85858f9f-144c-4c0c-b35e-efcb47053ae0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Joachim Van den Hove: Florida, Pavanas, Fantasias and Dances for Lute
Lute Music Of The Renaissance From The Schele Manuscript 1619
Delitiæ musicæ, Pratum musicum longe amoenissimum: Saltarello Englesa & Canarie
The Golden Dream (17th Century Music from the Low Countries)